Gynandromorphism

The term comes from the Greek γυνή (gynē) 'female', ἀνήρ (anēr) 'male', and μορφή (morphē) 'form', and is used mainly in the field of entomology.

[1][2][3] It has also been observed in crustaceans, such as lobsters and crabs, in spiders,[4] ticks,[5] flies,[6] locusts,[7] crickets,[8] dragonflies,[9] ants,[10][11] termites,[12] bees,[13] lizards,[14] snakes,[15] rodents,[16][17] and birds.

[18][19][20][21][22] It is generally rare but reporting depends on ease of detecting it (whether a species is strongly sexually dimorphic) and how well-studied a region or organism is.

For example, up until 2023 gynandromorphism had been reported in more than 40 bird species, but the vast majority of these are from the Palearctic and Nearctic, indicating that it likely is underreported in parts of the world that are not as biologically well-studied.

[27] A developmental network theory of how gynandromorphs develop from a single cell based on a working paper links between parental allelic chromosomes was proposed in 2012.